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string.is vs IT Tools: catalog facts
string.is	IT Tools
Free Free to use and open source under the AGPL-3.0 licence.	Free Free and open source.
Web, Self-hosted	Web, Self-hosted
Detects the input format and suggests output options Sets no cookies and uses a strict Content Security Policy	Bundles many small everyday dev utilities in one consistent interface Can be self-hosted for privacy or offline use
Internet Explorer is not supported Limited to the formats its converters cover	Individual tools are simple and may not match dedicated single-purpose apps in depth Self-hosting requires running your own instance
Web application, Self-hosted	Web application, Self-hosted
Open source	Open source
License: AGPL-3.0	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.